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3 cards from this section. Quick, good the night before a test.
What is a scan chain?
Think about how data is passed in tests.
Define scan-in.
It’s the input phase of testing in a scan chain.
What is the primary purpose of a scan chain?
Think about why designers implement additional testing features.
True or False: Scan-out is the process of inputting test data into the scan chain.
Recall the definitions of scan-in and scan-out.
Given a digital circuit with a scan chain of 7 flip-flops, how would you apply a test vector to detect a stuck-at fault?
Think of how you'd set up the inputs for each flip-flop.
Discuss the engineering trade-offs when integrating scan chains into an existing design. What factors must be considered?
Reflect on how adding components changes circuit dynamics.
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